Sidewall portion of an automobile tire



FIG. 1 is a perspective view of a sidewall portion of an automobile tire showing my design;

FIG. 2 is a front view thereof;

FIG. 3 is a top view thereof;

FIG. 4 is a right side view thereof;

FIG. 5 is a rear view thereof;

FIG. 6 is a fragmentary enlarged view showing the details of the sidewall portion defined by the brackets 6-6 in FIG. 2; and,

FIG. 7 is a section view taken along line 7-7 in FIG. 6.

The broken lines are used to show portions of the sidewall portion of an automobile tire that are not being claimed, and thus form no part of the claimed design. 

CLAIM The ornamental design for a sidewall portion of an automobile tire, as shown and described. 